Volume 14 Issue 4April 2008
Heliocentric Coordinates For The Visible Planets -- A View From Above
Name Apr 10 Apr 20 Apr 30
Mercury 354o 46' 048o 06' 110o 19'
Venus 342o 31' 358o 24 014o 19'
Earth 200o 30' 210o 17' 220o 01'
Mars 141o 47' 146o 10' 150o 32'
Jupiter 279o 56' 280o 46' 281o 36'
Saturn 156o 45' 157o 06' 157o 28'
Plot planet positions using polar graph paper or the provided activity sheet.

This is a coordinate system which allows for the plotting of a planet position along its orbital path using degrees (0o to 360o) of heliocentric longitude. Once plotted the orbital position of one planet could be compared with that of another planet. Or the relative orbital speeds of an inner planet could be compared with that of an outer planet.

Terrestrial Planets in Motion at 5 day intervals — April 2008
Above the Terrestrial Planets - April 2008
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